Language help

I want the Arabic equivalent of Daddy. "Ab" appears to be "father." I'll use that if I get stuck with it, but I'm wondering if that's what a little kid calls his Daddy, or if there's something more affectionate and less formal, like in English. Anybody know? And if there's anybody out there who could do the Egyptian variant, that would be EVEN MORE AWESOME, like anybody will know but still cool! :D